NEW YORK ( TheStreet) -- Atlas Pipeline Partners (APL), Southwestern Energy (SWN - Get Report) and Encana (ECA - Get Report) were the top gainers, while YPF (YPF - Get Report), Oasis Petroleum (OAS - Get Report) and Oil States International (OIS - Get Report) headed the losers' list last week.
Atlas Pipeline Partners
(SWN - Get Report)
grossed highest gains last week, growing 12.1% and 11.4%, respectively.
Encana rose 11.1%, after the company sought to buy a 30% stake in the Kitimat liquefied natural gas terminal. The company has agreed to acquire a 30% interest in the planned Kitimat LNG export terminal -- located on the west coast of central British Columbia -- and the associated natural gas pipeline.
Other prominent winners were
(CRK - Get Report)
EV Energy Partner
, up 11.1%, 10.9% and 10.5%, respectively.
Cabot Oil & Gas
surged 10.1% after the company received an upgrade from a couple of leading brokerages. The BOFA Merrill Lynch revised the stock's investment rating to buy from neutral and increased the price target to $55. Besides, Goldman Sachs also upgraded the stock to buy from neutral, following Marcellus Shale growth, and revised its target price upwards to $60 from $52.
rose 10.1% last week after the company reported 2010 net income of $49.3 million, from $ 23 million in 2009, benefiting from robust sales of its solar products, particularly in Asia.
Yingli Green Energy Holding
were up 9.8% and 9.6%, respectively.
Teekay LNG Partners
rose 9.2% and 9%, respectively.
Complete Production Services
advanced 9% after SunTrust initiated a buy on the stock with a target price of $37.5.
Other solar stocks
GT Solar International
advanced around 9%, 8.5%, 8.5%, 8.4% and 7.9%, respectively.
YPF was a major loser, erasing 9% value last week. Oil States International shed 5.2%. Oasis Petroleum lost 5.3% during the week, after brokerage firm Madison Williams downgraded the stock from accumulate to neutral, citing relative valuation.
Among other losers,
Enbridge Energy Management
China Petroleum & Chemical
dropped 4.4%, 4.3%, 4.1%, 4.1% and 3.7%, respectively.
erased 3.5% last week. According to the
Wall Street Journal
, Dardens, the founding family of Quicksilver Resources holding 26% equity share, abandoned the bid to take the company private. The Darden family and SPO Partners & Company -- QuickSilver's second-largest shareholder -- were given time until March 16 to arrange for the buyout. However, talks between SPO Partners and Dardens failed and the bid was subsequently dropped.